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OCR A Level Chemistry Exam Questions and Mark Scheme 4
- Exam (elaborations) • 19 pages • 2023
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OCR A Level Chemistry A (H432) Chemistry B (H433)
PAG 2: Acid-base titration
Exam Questions and Mark Scheme
1. The equation for the reaction of aqueous phosphoric(V) acid, H3PO4, with aqueous sodium
hydroxide, NaOH(aq) is shown below.
H3PO4(aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l)
25.0 cm3 of a 0.200 mol dm−3 H3PO4(aq) is titrated with 0.600 mol dm−3 NaOH(aq).
Which statement is correct?
A. The end point occurs when 25.00 cm3 of NaOH(aq) has been added.
B. The end point occurs when ...
Exam (elaborations)
OCR A Level Chemistry Exam Questions and Mark Scheme 4
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ago
OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 2: Acid-base titration Exam Questions and Mark Scheme 1. The equation for the reaction of aqueous phosphoric(V) acid, H3PO4, with aqueous sodium hydroxide, NaOH(aq) is shown below. H3PO4(aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l) 25.0 cm3 of a 0.200 mol dm−3 H3PO4(aq) is titrated with 0.600 mol dm−3 NaOH(aq). Which statement is correct? A. The end point occurs when 25.00 cm3 of NaOH(aq) has been added. B. The end point occurs when ...
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